Core plate



A. MCKENZAIE Feb. 10. l 925.

CORE PLATE Filed Jan. .4, 1921 2 Sheets-Sheet l Feb. 10. W25}.

A-. M KENZIE GORE PLATE 2 Sh sets-Sheet 2 Filed Jan. 24, 1921 glwpentoz finyua/Fifavzz? I Patented Feb. 10,

UNITED STATES PATENT OFFICE.

ANGUS MCKENZIE, UNITED ALLOY YORK.

To all whom it may concern:

Be it known that a subject of the King of Great Britain, re-

in the county of Stark and State of Ohio,-have invented a new and siding at Canton,

useful Gore Plate, of a specification.

This invention relates to core plates for drying molders cores, such cores bemg usually made of sand which is placed upon or baked in an oven.

As the core plates are subjected to extremely high temperatures during this drying or baking process, quently become warped, causing the cores which are often of delicate construction to become distorted.

The objects of the invention are to provide a core plate whi stand exceedingly a mlnimum danger tion, and to provide reinforcing means upon the core plate which the stacking of the core plates.

These objects together with other advantages may be attained by forming the core late from a. metal sheet of suitable gauge, the longitudinal edges being turned inward,

preferably at an ang of the sheet and surface of the next the transverse rein spaced away from the top of the under plate thus causing no interference.

In the accompanying drawings:

Figure 1 is a pers plate, embodying the Fig. 2, an inverted core plate;

high temperatures with OF CANTON, OHIO,

ASSIGNOR, BY MESNE ASSIGNMENTS, TO

STEEL CORPORATION, OF CANTON, OHIO, A CORPORATION OF NEW CORE PLATE.

Application filed January 24, 1921. Serial No. 439,629.

I, ANGUS MCKENZIE,

which the following is Fig. 3, a longitudinal sectional view through the core plate; and

Fig. 4:, an end elevation of a plurality of core plates stacked vertically.

Similar numerals of reference indicate corresponding parts throughout the drawings.

In the form of the invention illustrated in and adhesive material a core plate and dried the drawings, the core plate is shown formed of a rectangular sheet of metal 1, preferably oblong, having its longitudinal edges bent inward at an angle to the normal plane of the sheet as at 2, and thence directly the core plates fredownward to form the vertical flanges 3.

The flanges thus formed along the side edges of the plate prevent the plate from warping longitudinally, and provide a hand hold upon each side of the plate which may be grasped by the workmen and also furnish supporting legs for tion of the core plate f ch is designed to withbottom of the oven.

of warping or distorwill not interfere with le tothe normal plane transversely,

buckled or distorted.

versely.

adjacent lower plate, forcing means being pective view of a core lnvention; perspective view of the core plate along each side of the rib or corrugation which cannot be easily spacing the body porrom the floor or the For the purpose of strengthening the plate transversely reinforcing strips 4 may be spot welded or otherwise connected upon the under surface of the plate near each end, and each of these reinforcing strips may be provided with a central, longitudinal corrugation or V-shaped rib 5 which is preferably of less height than the longitudinal flanges 3. This particular construction of reinforcing strip considerably strengthens core plate as the strip is attached to the V-shaped The integral flanges 3 will thus prevent warping of the core plate in a longitudinal direction from the heat of the oven, and the transverse reinforcing strips will prevent any tendency of the core plate to warp trans- With this construction a core plate is provided which may be easily handled by the workmen for placing them in or removing them from an oven and at the same time each core plate is so designed that a number of the plates can be stacked as shown in Fig. 4, the longitudinal flanges 3 of each plate being spaced inwardly from the outer edge of the plate and arranged to rest upon the upper surface of the adjacent lower plate, and

these longitudinal flanges being of greater depth than the corrugated ribs 5 0f the reinforeing strips, the corrugated ribs do not interfere in any Way with the stacking of the core plates.

The core plate. may be perforated, as shown at 6 in Fig. 1 to facilitate thevdrying of cores, or may be made iniperforate to suit the various exigencies of use.

I claim l. A core plate formed of a sheet of metal provided with integral, inward and down- Ward inclined flanges along two oppositeedges terminating in down turned flanges.

A core plate formed of a sheet of metal provided with integ'al inward and clownward inclined flanges along tWo edges, terminating in down turned flanges, and transvel'sei'einfoi'cing strips having corrugated ribs extending transversely of said flanges and beingsecured to the under surface of said sheet."

ANGUS MCKENZIE. 

